Wire-winding device with smooth outlets

ABSTRACT

A wire-winding device with smooth outlets comprises an upper cover; a lower cover; a rotary unit; a wire winding around the rotary unit; two sliding units installed at two ends of the wire-winding device and at the inner sides of the upper cover and lower cover; each sliding unit having two retaining shafts and two hollow rollers; two retaining shafts of one sliding unit being installed at one end of the lower cover; each retaining shaft being installed with a hollow roller; the upper cover having two retaining holes corresponding to the two retaining shafts of the lower cover; and a via hole being formed between two hollow rollers so that the wire passes through the via hole to protrude out of the wire-winding device.

FIELD OF THE INVENTION

The present invention relates to wire-winding devices, and in particularto a wire-winding device with smooth outlets, wherein the wire can bewound or received smoothly by the hollow rollers so that the wear of thewire-winding device is smaller and thus, the wire-winding device has alonger lifetime.

BACKGROUND OF THE INVENTION

Referring to FIGS. 1 and 1-1, the prior art wire-winding device isillustrated. In this prior art, the wire 11 protrudes out of thewire-winding device 1 from the via holes 14 at two sides of the uppercover 12 and the lower cover 13. In use, the wire 11 is pulled out ofthe wire-winding device 1. If the wire-winding device is not used, thewire 11 is received within the wire-winding device 1.

Above mentioned prior art has the following disadvantages. Theperipheries of the via holes are sharp so that the wire will wear andthe wire cannot be pulled out or received smoothly. Furthermore, thesignal transferred through the wire will be deteriorated so that thewhole wire-winding device will be abandoned.

SUMMARY OF THE INVENTION

Accordingly, the object of the present invention is to provide awire-winding device with smooth outlets, wherein the wire can be woundor received smoothly by the hollow rollers so that the wear of thewire-winding device is smaller and the wire-winding device has a longerlifetime.

To achieve above object, the present invention provides a wire-windingdevice with smooth outlets which comprises an upper cover; a lowercover; a rotary unit; a wire winding around the rotary unit; two slidingunits installed at two ends of the wire-winding device and at the innersides of the upper cover and lower cover; each sliding unit having tworetaining shafts and two hollow rollers; two retaining shafts of onesliding unit being installed at one end of the lower cover; eachretaining shaft being installed with a hollow roller; the upper coverhaving two retaining holes corresponding to the two retaining shafts ofthe lower cover; and a via hole being formed between two hollow rollersso that the wire passes through the via hole to protrude out of thewire-winding device. When the upper cover is combined to the lowercover, the retaining shafts of the lower cover are engaged to thecorresponding retaining holes of the upper cover so that the two hollowrollers are rotatable along the two retaining shafts, respectively.Thus, by the rolling of the two hollow rollers, the wire can be receivedin or pulled out of the wire-winding device so that the wire can slidesmoothly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a prior art wire-winding device.

FIG. 1-1 is an exploded view of the prior art wire-winding device.

FIG. 2A is an exploded view of wire-winding device of the presentinvention.

FIG. 2B shows another exploded view of the wire-winding device of thepresent invention.

FIG. 3 is a perspective view of the wire-winding device of the presentinvention.

FIG. 4 is a cross sectional view about the wire-winding device of thepresent invention.

FIG. 5 is a schematic view showing another embodiment of thewire-winding device of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

In order that those skilled in the art can further understand thepresent invention, a description will be described in the following indetail. However, these descriptions and the appended drawings are onlyused to cause those skilled in the art to understand the objects,features, and characteristics of the present invention, but not to beused to confine the scope and spirit of the present invention defined inthe appended claims. Referring to FIGS. 2A, 2B, 3 and 4, thewire-winding device of the present invention is illustrated. The presentinvention includes the following structure.

An upper cover 21, a lower cover 22 and a rotary unit 23 are included inthe present invention. A wire 24 winds around the rotary unit 23.

Two sliding units are installed at two ends of the wire-winding deviceand are at the inner sides of the upper cover 21, and lower cover 22.Each sliding unit has two retaining shafts 25 and two hollow rollers 26.Two retaining shafts 25 of one sliding unit are installed at one end ofthe lower cover 22. Each retaining shaft 25 is installed with a hollowroller 26. The upper cover 21 has two retaining holes 27 correspondingto the two retaining shafts 25 of the lower cover 22. When the uppercover 21 is combined to the lower cover 22, the retaining shafts 25 ofthe lower cover 22 are engaged to the corresponding retaining holes 27of the upper cover 21 so that the two hollow rollers 26 are rotatablealong the two retaining shafts 25, respectively. A via hole 28 is formedbetween two hollow rollers 26 so that the wire 24 passes through the viahole 28 to protrude out of the wire-winding device. Thus, by the rollingof the two hollow rollers 26, the wire 24 can be received in or pulledout of the wire-winding device so that the wire 24 can slide smoothly.

Referring to FIG. 5, another embodiment of the present invention isillustrated. In this embodiment, a connector 3 is installed at one endof the wire 24 and another end of the wire 24 is installed with anearphone 4. Or two ends of the wire 24 are installed with differentelectronic devices.

In the present invention, the wire 24 can be wound or received smoothlyby the hollow rollers 26 so that the wear of the wire-winding device issmaller and the wire-winding device has a longer lifetime.

Advantages of the present invention will be described in the following.By the present invention, the wire can be pulled out of or received intothe wire-winding device smoothly. The hollow rollers makes that thewire-winding device can be used for a longer time. Thereby the structureof the present invention is simple.

The present invention is thus described, it will be obvious that thesame may be varied in many ways. Such variations are not to be regardedas a departure from the spirit and scope of the present invention, andall such modifications as would be obvious to one skilled in the art areintended to be included within the scope of the following claims.

1. A wire-winding device with smooth outlets comprising: an upper coverhaving a round central portion and two extending portion symmetricallyextending from an upper side and a lower side of a round portion; alower cover having a round central portion and two extending portionsymmetrically extending from an upper side and a lower side of a roundportion; a rotary unit installed between the upper cover and the lowercover; a wire winding around the rotary unit; two sliding unitsinstalled at the two extending portions of the upper cover and lowercover; each sliding unit including: two round cylindrical retainingshafts; two retaining shafts of one sliding unit being installed at oneend of the lower cover; each retaining shaft being installed with around cylindrical hollow roller; the upper cover having two roundcylindrical retaining holes corresponding to the two retaining shafts ofthe lower cover; and a via hole being formed between two hollow rollersso that the wire passes through the via hole to protrude out of thewire-winding device; wherein when the upper cover is combined to thelower cover, the retaining shafts of the lower cover are engaged to thecorresponding retaining holes of the upper cover so that the two hollowrollers are rotatable along the two retaining shafts, respectively;thus, by the rolling of the two hollow rollers, the wire can be receivedin or pulled out of the wire-winding device so that the wire can slidesmoothly.
 2. The wire-winding device with smooth outlets as claimed inclaim 1, wherein two ends of the wire are connected with respectivedevices.